Mineral Dust Cycle

Mineral Dust Cycle

Mineral dust  aerosols produced  by wind erosion in arid and semi-arid regions contribute for more than 40% of the total annual emissions of tropospheric aerosols. In the atmosphere, these aerosols influence the terrestrial radiative balance and are thus major contributors to climate forcing. Dust deposition is a significant source of nutrients (Fe, P, …) for remote oceanic ecosystems regions, while dust emission contributes to soil loss in source regions. The research activities carried at LISA in this field are mainly focused on the quantification of dust emissions, transport and deposition, in order to assess their radiative and biogeochemical impacts. For this objective, intensive (ground-based and airborne) and longterm field measurements and laboratory experiments are coupled with numerical simulations.

Publications

Jianyu Zheng, Zhibo Zhang, Sergio DeSouza-Machado, Claire L. Ryder, Anne Garnier, Claudia Di-Biagio, Ping Yang, Ellsworth J. Welton, Hongbin Yu, Africa Barreto, Margarita Y. Gonzalez

Assessment of dust size retrievals based on AERONET: A case study of radiative closure from visible-near-infrared to thermal infrared
Geophys. Res. Lett.

Tuesday 16 April 2024
Flamant, C., Chaboureau, J.-P., Gaetani, M., Schepanski, K., Paola Formenti

The radiative impact of biomass burning aerosols on dust emissions over Namibia and the long-range transport of smoke observed during the Aerosols, Radiation and Clouds in southern Africa (AEROCLO-sA) campaign
Atmos. Chem. Phys.

Wednesday 10 April 2024
Boudriga, I., Charlotte Poindron, Y. Khammeri, A. Bellaaj Zouari, V. Rossi, M. Thyssen, Karine Desboeufs, M. Bel Hassen

Impact of atmospheric deposition on the dynamics of ultraphytoplanktonic populations in the Gulf of Gabès during an intense dust event (MERITE-HIPPOCAMPE campaign)
Marine Pollution Bulletin

Friday 1 March 2024
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News

L’érosion éolienne est la mise en mouvement des agrégats constitutifs du sol sous l’action du vent. C’est un phénomène à seuil qui dépend d’une part de...
Wednesday 29 March 2023
Les vastes quantités de poussières soulevées au Sahara modifient fortement les bilans énergétiques terrestres, les processus biogéochimiques, la...
Wednesday 10 June 2020
  Front de poussière arrivant sur la ville de Niamey le 4 mai 2020 vers 14h (Photo Aliko Mamane – IRD Niamey)   Le 4 mai dernier, Niamey,...
Thursday 28 May 2020